LCD industry mature market AM OLED to catch up

OLED-display.cnLEDw.com/ >LED display market will grow rapidly since 2008, its application will also be expanded to the size of laptops and flat-panel TVs and other display.

AM OLED (active organic light emitting diode) is considered to be the existing LCD, PDP display technology is one of the most powerful competitors, because it does not need to use the backlight panel, faster response speed, higher contrast, can be made very thin, but the power consumption is much lower. However, LCD also did not sit still. In view of the challenge from AM OLED, the new technical progress also makes LCD display in color performance, contrast, panel thickness and other aspects have been significantly improved, power consumption is further reduced. AM OLED technology leading edge has been greatly reduced.

The LCD industry has been very mature supply chain and large-scale production costs and other advantages, but also to catch up with or even surpass LCD AM OLED technology to establish a solid barrier. It can be said that, if you can not re establish their own technical advantages, or to quickly realize the lower cost of products, AM OLED is likely to be covered by the development of LCD and other mature technology, thus choking death.

LCD module embrace low power LED backlight

DisplaySearch is expected in 2008, the global flat-panel display output value will reach $120 billion by 2015, shipments of flat-panel display area will reach all display 98%, become the mainstream market absolutely, which accounted for 88% of the total area of LCD shipments, as the main application technology, plasma display technology (PDP) will occupy 8% of the proportion. The remaining 2% of the shipments are other flat-panel display technologies such as OLED, flexible display partition.

The increasing size of the LCD terminal is increasingly plagued by power problems. In order to reduce power consumption, LED backlight, MiniVDS, DFR and many other LCD module manufacturers focus on the topic of. In particular, it is the most important to reduce the power consumption on the backlight.

At present, the use of LED backlight instead of CCFL has become the main trend of the industry, SONY, SHARP, Samsung and others have begun to use LED backlight on large size LCD TV. CCFL is being replaced by the use of LED backlight backlight, only this one can reduce the power consumption of the LCD module 2/3, this trend is particularly evident in notebook computers. At present, AU Optronics, LG and Samsung are doing. But LCD TV with LED backlight is not a lot of.

DisplayBank report shows that the current laptop market LED backlight penetration of about 13%, while the proportion of LCD TV is small enough to be negligible. The report said that by 2012, the proportion will rise to about 60% and about 15%. DisplayBank analyst Yu Weilong believes that the main reason for the existence of the gap between the laptop power consumption, especially standby power requirements are more urgent. In addition, due to the smaller screen used in notebook computers, LED backlight applications will be slightly lower. In addition, the high cost of LED backlight is also a major obstacle to its use in LCD tv. However, with the gradual reduction of costs, the problem will gradually be resolved.

Power is not the only reason to convince people to embrace the LED backlight. Quality and ultra-thin trend is also an important reason for this technology popular in the future.

Dianjing science and technology limited company image display affairs office director Zhang Kaijun pointed out that the light sensor to determine the backlight brightness sensed by the brightness of the environment, but also the sense of liquid crystal screen itself, can help to reduce power consumption.

CCFL lost 50% of the video screen brightness, LED will not have any such losses, but also save a lot of energy consumption. In addition, both in the IFA or CES conference, you can see the ultra-thin TV has become a trend, LED backlight can save about 30~40mm of the body thickness, which is its advantage. "

However, Zhang Kaijun also pointed out that reduce power consumption and increase the maximum brightness of the two panel, basically is the conflict, which is the LCD TV manufacturers common challenges, but can be from two aspects to assist LCD module manufacturers to achieve the goal, the first is to improve the LED backlight power conversion efficiency of second is through the light sensor to achieve the panel and the backlight brightness is the most suitable. Dianjing science and technology development focus on the latter, the design through the ambient light sensor is sensed by the brightness of the environment, to determine the backlight brightness, and sensing liquid crystal screen itself, PWM way to adjust the regional backlight brightness, not only can reduce the power consumption, but also can improve the picture contrast.

Similarly to the light sensor as the main technology driven IC design company Microsemi days before and Innolux launched a collaboration RGB LED backlight driver of large size LCD TV, the Microsemi digital TV using the integration of advanced lighting technology (Digital Advanced Zone Lighting, DAZL) LED driver, scanning backlight mode it supports backlight LED (1-D) and regional dimming mode more tip (2-D).

Scanning backlight mode greatly reduces the phenomenon of motion blur, and the regional dimming mode, in addition to reducing the motion blur, but also greatly improve the contrast, and more energy-efficient.

Microsemi Steve McClure analog mixed signal product line marketing vice president Steve McClure pointed out that large LCD TVs need to use a large number of LED, will bring greater heat problems and lead to rising costs.

The company's large size LCD TV is facing a challenge, which requires the use of a large number of LED, which leads to greater heat issues, and lead to rising costs. DAZL series